I am having head gasket replaced right now.
Mechanick recomended ( and I agree with him ) to replace some hoses. As I uderstand when engine oil is intraduced into cooling system it makes ruber hoses to crack.

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Dmitry
90' 300CE
17" Intra Signums
Brulen mufler
Euro Headlights/Clear Blinkers
White gouges (made my own)